Cake-mixer.



No. 785,332. PATBNTEDMAR. 21', 1905.

P. R. SCHMIDT.

CAKE MIXER.

' APPLICATION FILED JULY 5,1904.

2 SEEETSSHEET 1.

No. 785,332. PATENTED MAR. 21', 1905.

I. R. SCHMIDT.

CAKE MIXER. APPLICATION map JULY 5, 1904.

2 SHEETS-SHEET 2.

"Zinesssw Inventor; %4%M T J%M- UNITED STATES Patented March 21, 1905.

PATENT OEEIcE.

CAKE-MIXER.

SPECIFICATION forming part of Letters Patent No. 785,332, dated March21, 1905.

Application filed July 5, 1904:. Serial No. 215,316.

To all whom, it may concern.-

Be it known that I, FREDRICK R. SCHMIDT, a citizen of the United States,residingi-n the city and county of San Francisco and State ofCalifornia, have invented new and useful Improvements in Cake-Mixers, ofwhich the following is a specification.

My invention relates to an improved machine for mixing materialpreparatory to baking into cake.

In cake-mixing, some kinds of cakes are known as beaten cakes and othersas rubbed cakes. such cakes as sponge cake,

creams, charlotte russe and those generally made from the whites ofeggs. On the other hand, pound-cake, fruit-cake, wine-cake, and likeheavier mixtures are essentially rubbed cakes. While there are devicesby which cakes of the first class can be prepared, generally those ofthe second class have to be mixed and rubbed in a separate apparatus orworked by hand.

The object of my invention is to provide a simple machine formechanically beating, rubbing, and finishing cakes of any sort.

It consists of the parts and the construction and combination of parts,as hereinafter more fully described and claimed, having reference to theaccompanying drawings, in which- Figure l is a side elevation of myinvention. Fig. 2 is a plan view of same. Fig. 3 is a transverse sectionthrough the drum. Fig. 4 is a section on line 3/ y of Fig. 3. Fig. 5 isa detail of a side-scraper.

A represents asuitable framework supporting a drum 2, disposed with itsaxis horizontal and formed of two separable sections, as shown. Theupper section is provided with an opening for the admission of the cakeingredients, and this opening is closed by a suitable cover 3, having aninclined bottom portion 4, arranged to lie, when the cover is closed, ina plane continuous with the inner periphery of To the first class belongV the mixing-chamber.

the recess of the cover, as would otherwise occur by the rotary actionof the mixer. This dashcr or mixer comprises a sleeve 6, embracing andprotecting the axle and adapted to be secured thereto by suitable means,as the screw 7 and having the hub portions 8 at each end, from whichextend four or more radial arms or spokes 9. The transverse widthbetween the outer ends of the spokes is substantially that of the insidewidth of the drum. The spokes on each hub support two concentric rings10 11, preferably arranged in different vertical planes.

rods 12, and the inner rings 11 are connected by similar wires or rods13, while the outer and inner rings on each side are connected by theradial wires or rods 14. In fact, it may be preferred that each set ofwires 12 13 14 be in one piece suitably wrapped' around and secured inplace on the rings. These outer and inner sets of wires 12 13 moving indiflerent planes concentric with the inner periphery of the drum,together with the radial inclined wires 14, serve as heaters andwhippers to thoroughly mix and agitate the contents of Any suitablemeans may be employed to rotate the dasher. In the present instance Ihave shown hand-operated means, consisting of a crank 15, with a largegear 16 engaging a smaller gear 17 on shaft 5.

To produce the desired rubbing eiiect sometimes needed, I have shown aseries of rollers 18, supported between the outer ends of the spokes anddisposed in an arc in close proximity "to, but not quite coincidentwith, the inside of the drum. j

In cake-mixing it is essential that all parts of the ingredientscontained in the dish or receptacle in which stirring or mixing goes onshould be gotten at and stirred, so as to result in an entirelyhomogeneous mass. Consequently there should be no angles or pockets inwhich any portion of the mass may lodge. Hence the preferred roundreceptacle 2. Furthermore, 1 have shown scrapers 19 20, whichrespectively scrape the sides and circular walls of the mixing-chamberand tend to turn the p The outer rings 10 are connected by a series ofcross-wires or small contents, which are thrown outward by centrifu galaction, back again toward the center of the chamber. The transversescrapers may be fixed rigidly to the rings 10; but the scrapers 19(shown in detail in Fig. 5) are preferably supported pivotally in hubs 8and are slotted, as at 21 22, to receive the respective rings 10 11. Theobject of thus supporting the scrapers 19 is that it permits them toswing more nearly into a plane parallel with the sides of the drum incase the direction of motion of the dasher is reversed and moreparticularly on ables the scraper to be easily removed and cleaned.

In operation the butter and sugar and flavoring matter are introducedinto the drum,

the cover 3, closed and the dasher set in rapid motion. A few turns ofcrank 15 serves to whip the butter and sugar into a light foam. The eggsare then added as needed and the agitation continued until they arewhipped into proper condition. Flour, fruit, anything may be added asdesired and the entire composition beaten, rubbed, and rolled to producea finished mixture. It is this feature of the practicability of themachine for any and all sorts of cake that constitutes its main claimfor novelty. It makes no difference what the resultant mixture is to be.It effects the desired beating and whipping, and if rolling or rubbingis needed and there is anything to rub it does this also. An absolutelyhomogeneous mixture is assured. The entire Work up to the actual placingof the composition in the baking-pans is done in one apparatus and inone operation. The sectional and separable character of the apparatusallows it to be taken apart quickly and thoroughly cleaned and asquickly reassembled ready for use.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a cake-mixer, the combination with a container of a rotary mixerhaving a plurality of annular series of transversely-extending Wires orrods and provided with rollers arranged exterior to the wires or rodsand contiguous to the inner surface of the container.

2. In a cake-mixer, the combination with a container of a rotary mixerhaving a plurality of annular series of transversely-extending wires orrods and provided with rollers arranged contiguous to the inner surfaceof the container,- and lateral radial and transverse scrapers carried bysaid mixer.

3. In acakemixer,thecombination'ofacontainer inclosing a circularchamber, a rotary mixer concentric with said chamber,said mixercomprising plural series of transversely-extending rods disposed in arcsconcentric with the chamber, the latter having an ingress-passage and aclosure for said passage, said closure having an inclined bottom withits lower edge substantially continuous with the inner periphery of thechamber, and scrapers carried by said mixer and operating against theinner wall of the chamber.

4. In a cake-mixer, the combination of a circular sectional containerand an inclosed rotary concentric dasher or mixer, said dashercomprising a hollow hub portion, radially-ex tending arms from oppositeends of said hub portion, concentric rings supported by said arms, aseries of cross-wires connecting opposite rings, and radial scraperscarried by said arms and operating against the ends of the container.

5. In a cake-mixer, the combination of acircular sectional container andan'inclosed rotary concentric dasher or mixer, said dasher comprising ahollow hub portion, radially-extending arms from opposite ends of saidhub portion, concentric rings supported by said arms, a series ofcross-wires connecting opposite rings, rollers supported between theseveral arms and arranged in close proximity to the inner periphery ofthe container.

6. In a cake-mixer, the combination of a circular sectional containerand an inclosed rotary concentric dasher or mixer, said dashercomprising a hollow hub portion, radially-extending arms from oppositeends of said hub portion, concentric rings supported by said arms, aseries of cross-wires connecting opposite rings, rollers supportedbetween the several arms and arranged in close proximity to the innerperiphery of the container, and pivotally-supported radially-disposedremovable scrapers carried by the dasher and adapted to engage the sidesof the container.

7. In acake-mixer, the combination of a circular sectional container andan inclosed r0- tary concentric dasher or mixer, said dasher comprisinga hollow hub portion, radially-extending arms from opposite ends of saidhub portion, concentric rings supported by said arms, a series ofcross-wires connecting opposite rings and pivotally-supportedradiallydisposed removable scrapers carried by the dasher and adapted toengage the sides of the container.

8. In a cake-mixer,the combination of a container inclosing a circularchamber, a rotary dasher or mixer concentric with said chamber andmounted on a horizontal axis, said dasher including a'plurality ofradially-supported rings and cross-wires connecting said rings, andscrapers carried by the mixer exterior to the rings and wires.

9. In a cake-mixer,the combination of a container inclosing a circularchamber, a rotary dasher 01' mixer concentric with said chamber andmounted on a horizontal axis, said dasher including a plurality ofradially-supported rings, cross-wires connecting said rings,crossrollers supported between said rings and movable in close proximityto the interior of the chamber.

10. In a cake-mixer, the combination of a container inclosing a circularchamber, a rotary dasher or mixer concentric with said chamber andmounted on a horizontal axis, said dasher including a plurality ofradiallysupported rings cross-Wires connecting said rings, cross-rollerssupported between said rings and movable in close proximity to theinterior of the chamber, and radially-disposed removable scraperscarried by the dasher and adapted to engage the sides of the container.container.

11. In a cake-mixer, the combination of a container inclosing a circularchamber, a rotary dasher or mixer concentric with said chamber andmounted on a horizontal axis, said dasher including a plurality ofradiallysupported rings, cross-wires connecting said rings,cross-rollers supported between said rings and movable in closeproximity to the interior of the chamber, radially-disposed re- 'movablescrapers carried by the dasher and adapted to engage the sides of thecontainer, said container having an ingress-passage and a closure forsaid passage, said closure having a bottom inclined downwardly in thedirection of rotation of the 'dasher. the lower edge of said inclinedbottom being substantially continuous with the inner periphery of themixing-chamber and means for rotating the dasher. y

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

FREDRICK R. SCHMIDT.

Witnesses:

B. GRAVES, VERNON P. IRVIN.

